First of all, I don't accept credit cards yet. But I am still thinking of getting one just for the sake of securing the passwords of my clients
Now that I integrated facebook and google+ login, I am even more scared of attacks.
So the question is, do I need an SSL certificate as early as now? With my understanding, facebook and google+ login are secured from their side. Not on my opencart website. Like an SSO mechanism or gateway. So middle man attacks can be avoided.